Balanced rotary valve



(ModeL) A. E. WILSON.

BALANCED ROTARY VALVE.

NO. 2781548. Patented May 29,1883.

- INVENTOR WITNESSES zzum ATTORNEYS.

UNITED STATES:

PATENT OFFICE.

ABIEL E. WILSON, OF WORCESTER, MASSACHUSETTS.

BALANCED ROTARY VA LYE.

SPECIFICATION forming part of Letters Patent No. 278,648, dated May 29, 1883.

Application filed February 28,1883. lModel.)

jTo all whom it may eoncernl Be it known that I, ABIEL E. V nson, of Worcester, in the county of Worcester and State of ,Massachusetts, have invented a new and Improved Balanced Rotary Valve, of which the following is a full, clear, and exact description. 3-,. v

My improved valveis intended for use with regulators of pressure of steam, water, or air,;

or in any situation where a frictionless valve, requiring but little movement to give a wide opening, is a necessity.

The inveution consists in a double valve or two valves carried by a single stem and formed with ports, combined with a body or case of suitableconstruction,as hereinafter described andclaimed.

Reference is to behad to the accompanying drawings, forming part of this specification, in

which similar letters of reference indicate cor.

responding parts in both the figures.

Figure l is a central cross-section of my im proved valve, and Fig. 2 is a section on line a: a: of Fig. 1.

A is the body or case of the valve, preferablyjof globular form; and having an outlet, 0!, and inlet b atopposite sides, which are, separated by apartition, c.

cl is the valvestem, passing through the valve-case and through the partition 0, and e e are the valves fixed upon the stem and seated in the partition. The partition 0 is flanged or extended, so that bothvalves can .be seated upon one side of the partition, with reference to thefoutlet, and at opposite sides of tbeflange, whereby they close to their seats in opposite direction and will be both pressed thereto by pressure of the fluid admitted by the inlet. The valves e are made with ports f, and their seats pierced with corresponding openin gs, g, so that when the valves are turned slightly the ports shall be made to open and close more or less to regulate the escape of the fluid, and, the ports being made as numerous as may be,it will be seen that a slight movement of the valves is suff cient to make considerable variation in the total area of the ports.

By the construction described the two valves. l

willbe balanced by the pressure of water or eand consequentlytherewill be lit- I case is to be connected in a water-supply pipe forregulating the discharge and pressure,:and 5 the stem counected to a pressure-diaphragm in any suitable manner. The valve, may,h0wever be used as a throttle-valve on steam-pipes, or in other situations where balanced valves are required.

The case A is shown as formed with openings through which the valves can be inserted and fitted, andthe openings are covered, with caps h h, one of which is made with a step for the end of the stem d, and the other provided with a stuffing-box for the stem that passes through. The valves shown are conical, and 1 may be of that form or more or less flattened at one end, as shown on the valve at one side and in Fig. 3. Flat valves may also be used ribbed, asshown inFig. 4, to strengthen them againstthe pressure.

In some cases the'inlet and outlet .may be reversed, so that the pressure shall act to press the valves outward], p

Havingthus described my invention, what l claim as new, and desire to secureby Letters Patent, is'

In a'balanced rotary val.ve,the combination, .4.

ABIEL E. wlnsou.

Witnesses Y J. E. DAY, WM. M. GATES. 

